Internal spring-metal reenforcing member



March 25, 1930. v. KARBOWSKI 5 INTERNAL SPRING METAL REENFORCING MEMBER Filed Sept. 7, 1926 I I \\\\\\YY .V A ARBOWS/r/ 2 BY Va ATTORNEYS INVENTOR Patented Mar. 25, 1930 UNITED STATES ENQ E VICTOR KARBOWSKI, OF CHICAGO, ILLINOIS, ASSIGNOR T FELIX S. FELDI-IEIM, OF

EVANSTON, ILLINOIS INTERNAL SPRING-METAL nnnuronoine MEMBER Application filed September 7, 1926. Serial No. 134,052.

My invention relates to improvements in in-- ternal spring metal reenforcing members, and it consists in the combinations, constructions, and arrangements herein described and claimed. An object of my invention is to provide an internal spring metal reenforcing member which takesthe place of the ordinary inner tube, and which provides substantlally the 9 same resiliency as the inner tube.

A further object of my invention is to provide a device of the type described which may be readily inserted within a vehicle tlre, and conform to the inner walls. thereof.

A further object of my invention is to pro vide a device of the type described which will force the beads of the tire outwardly against the rim when the tire is applied there to.

vide a device of the type described which is durable and efficient for the urpose intended, and inexpensive to manu acture.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particular- 1y pointed out in the appended claim.

My invention is illustrated 1n the accom panying drawings, forming part of this application, in which Figure 1 is a side elevation of the dev ce, Figure 2 is an enlarged section along the line 22 of Figure 1,

Figure 3 is a sectional View of the device as applied to a vehicle tire and mm, and

Figures 4-.and 5 are modified forms of my device.

In carrying out my invention, I make use of a vehicle tire 1 and a vehicle rim 2.

The internal reenforcing member consists of a single piece of spring metal 3 of uniform thickness which is bent into the form of a split annulus or ring of substantially cylindrical cross section. The edges of the split portion are normally inclined toward each other as shown in Figure 2 and are provided with inwardly extending flanges 4 and 5 which, when the reenforcing member is not under tension, take the position shown. in Figure 2.

A further object of my invention is to pro- From the foregoing description of the various parts of the device, the operation there of may be readily understood. In placing the reenforcing member within the vehicle tire, the walls of the tire are moved outwardly-and the member is forcedtherein; In applying thetire and the reenforcing member to'the rim 2, the. flanges 4 and 5 are forced "toward each other into the position shown in Figure 3. I/Vh'en the reenforcing member and the tire are ass'embled upon the rim, the flanges 4t and 5 bear upon the rim 2, see Fig 'ure 3 In this manner, the force applied to the tire is distributed through the reenforcing member to the rim. It is obvious that the flange portions 4: and 5 force outwardly and firmly hold the bead of the tire against the side walls of the rim. In this manner, there is no possibility of the tire coming off the In Figure 4, I have shown a modified form of my device which consists of an internal reenforcing member '10 constructed of a spring metalcylinder. The reenforcing member 10 is identical in construction to the reenforcing member 3 shown in Figure 2, and is provided with inwardly extending flanges 11 and 12. I make use of a vehicle tire 13 having bead portions 14:. V

- I provide a vehicle rim 15 having outwardly extending flanges 16 and an outwardly ex-- tending tightening flange 17. The flange 17' is disposed at the centerof the rim 15, the walls of the flange 17 tapering outwardly. The reenforcing member 10 is placed within the tire 13, and the vehicle tire, together with the reenforcing member, is disposed upon the rim 15. The flanges 11 and 12 are disposed internal reenforcing member 20 constructed of a spring metal tube. I make use of a vehicle tire 21 into which the reenforcing member 20 is inserted. The tire 21 is provided with bead portions 22. I provide a ring 23 which is constructed or" relatively hard rubber and disposed between the, bead portions 22. I make use of a rim 24 having outwardly extending flanges 25. The vehicle tire 21, the

reenforcing member 20, and the ring 23 are disposed upon the rim when assembled. The ring 23 serves as a CLlShlOll for the reenforcing member 20 and also forces the bead portionsoutwardly against the flanges 25 when pressure is applied to the tread of the vehicle tire.

It is obvious that in all these formsofmy device, the vehicle tires may be formed about the reenforcing members, if it is so desired. I claim: I

A reenforcing member for tires consisting of a single piece of spring sheet metal of uniform thickness bent to form a split annulus having a substantially cylindrical cross section, the edges being normally inclined toward one another and being provided with flanges, said flanges being adapted to be brought into a transverse alignment by external pressure on the walls of the reenforcing member.

VICTOR KARBOWSKI. 

